Inspirator.



No. 784,066. l PATENTED MAR; 7, 1905. W. R. PARK.

IN SPIRATOR.

APPLICATION FILED MAY 31, 1904.

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ivo. 784,066.

Patented 'Ll/[arch 7, 1905.

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WILLIAM R. PARK, OF TAUNTON, MASSACHUSETTS, ASSIGNUR, BY MESNE ASSIGNMENTS, T() THE UNITED I NJEGIOR COMPANY, A UORPORAIION OF NEW YORK.

SPECIFICATION forming part of Letters Patent No. 784,066, dated March 7, 1905.

Application filed May B1, 1904. Serial No. 210,367.

To all wit/mt it mfr/y/ concern.:

Be it known that I, lViLLIAM R. PARK, a citizen of the United States, and a resident ot' Taunton, in the county of Bristol and State oi Massachusetts, have invented new and use- :t'ul Improvements in Inspirators, of which the following is a specification.

- My invention relates to inspirators or injectors, and particularly to that type of injector' IO illustrated in United States Letters Patent to myself, W. R. Park, and B. T. Williston, No. 492,944, dated March 7, 1893, in which the manipulation ot' a single operating-lever controls the steam-admission valve to the lifting'- I 5 tubes, the steam-admission valve to the forcing-tubes, and the iinal overliow-valve. the steam-admission valves are opened the iinal overIlow-valve is gradually closed, and vice versa, and the overflow-valve when closed 2O u-pon its seat serves as a stop to limit the movement ot the control-lever, and thus determines the ultimate area of the steam-inlet valves. Inasmuch as the inspirator shown in said patent is characteristic of that type of instrument in which my invention is adapted to be used, I will direct my description to an embodiment of my invention in an instrument ot' that type; but it is to be understood that my invention is not limited in its application to an instrument ot' this particular form.

The principal object of my invention is to provide means positively and accurately to ad just and proportion the area oi the initial opening of the overiiow-valve and to time the clos- 3 5 ing of the same with reference to the opening of the steam-admission valves, and also incidentally to provide means accurately and positively to proportion the area ot' the ultimate opening oi the steam-admission valve for the 40 forcing-tubes, all to accord with the size and capacity or' any Vgiven set or' change-tubes used for thetime being in the inspirator.

The capacity ot an inspirator or injector is proportionate to the size of the tubes used.

For a set of tubes of given size the initial opening of the overflow-valve must be of appropriate size; otherwise the proper measure will not be maintained in the overiiow-cham ber to insure the starting oi' the inspirator when thelitting-tube has raised the water to 5o the proper point and the admission-valve to the forcing-tu bes is opened. In order to give the best results,it is also desirable thata proper and proportionate su ppl y et' steam be admitted to the liorcing-tubes, which is attained by pro- '5 5 portioning the ultimate or wide-open area ol3 the steam-admission valve to the forcingtubes. Hitherto in instruments ot' this class it has been usual to equip the injector-casing with a set ot' tubes intended to become per- 6o manent parts ot' the instrument and to pro portion the area oi the overliow-valve and el the steam-admission valves to accord with the lixed sets ol. tubes, all the parts beingI permanently assembled, thus providing an instrument oi a single and lxed capacity.` lt is highly desirable in practice, however, to be able to change the capacity ot an injector by changing the tubes, so that an instrument may be provided with several sets of tubes and within reasonable limits may be transformed into an injector of any desired capacity by inserting the appropriate set oi" tubes.

To secure good results with varying sizes ol tubes,provision must be made :for cmrespond- 7 5 ingly varying and adjusting the initial area olE the overiiow-valve opening' lor the reasons already explained, and this capacity for adjustment must be positive and accurate and must not be dependent upon tests or experi- 30 ments nor upon the usual degree oli skill and care to be expected oi the operator. IV ith my invention an unskilled workman can make the adjustment necessary for the tubes ol any desired capacity with accuracy, ease, and rapidity.

The improved inspi 'ator containing my invention comprises an overflow valve and steam-supply valves to the lifting and forcing tubes, both the overiiow-valve and the steamsupply valve tor the 'forcing-tubes connected with and operated by a single co1'1trol-lever, preferably as usual, but ditlers `from inspirators as heretofore constructed in, that l have provided therein means for adjusting the connecting means between the overfiow-valve and the control-lever to regulate thearea oi' the initial opening' oli the overflow-valve, which also regulates the ultimate opening of the steamadmission valve to the forcing-tu bes and properly times the closing otl the overiiow and the opening or' the steam valves, all to accord with the size of the tubes employed. As herein shown, the capacity for adjustment in this respect is secured by providing a gag'e-bolster for supporting and positioning the fulcrumbracket which carries the operating-lever of the overflow-valve. rIhis bolster is removable and can be changed for another bolster of a different size, whereby the fulcrum of said operating-lever of the overflow-valve can be shifted and the initial opening of the overflow-valve accurately and positively adjusted.

Other features of my invention and other improvements will presently be pointed out.

In the accompanying' drawings, Figure l is a side elevation of an inspirator embodying one form of my invention. Figs. 2, 3, and -I are enlarged details of the fulcruni-bracket and gage-bolster hereinafter described.

Having reference to the drawings, A represents the casing of an inspirator, c being the water-inlet, a the steam-inlet@2 the overiiow, and a? the delivery. indicates the steamvalve for the usual duplex lifting-tubes, o the steam controlling valve for both the lifting and forcing tubes, u the overfiow valve, a7 the control-lever fulcrumed at is and pivotally connected at ai to valve a, cw the operatinglever for the overflow-valve a, tu the link connecting lever am with valve c, and c the link connecting lever uw and at?, all constructed and operating as usual.

The operating-lever uw is fulcrumed upon a pin I), carried by a bracket B. Bracket B comprises a split hub L, mounted upon a post c, fast to casing A, and from hub 7/ depends a leg Z22, supported at its lower end upon a gage-bolster Leg i and gage-bolster 3 are fastened in place by a removable clamping-screw L", extending through the leg and the gage-bolster into a tapped hole L5 in casing A.

The gage-bolster b3, as will be seen, is removable, and in practice I provide a number of them which are interchangeable; but each differs in thickness or height vfrom the others and is adapted and intended to be used only with a set 'of tubes of a definite and appropriate size-that is, I provide as many gagebolsters 3 of different heights as there are dierent sizes of tubes, and when a set of tubes of a definite size is set in place within the inspirator I use a gage-bolster 1 of a thickness or height appropriate to tubes of that size. Said gage-bolster thus serves to position the fulcrum upon pin vertically, so that the initial opening of overflow-valve c will correspond to the capacity of the tubes used, and, further, that when valve c is seated valve f will have been opened to an extent sutiicient to give the proper supply of steam to tubes or' that size. It will thus be seen that by using a bolster 3 of proper thickness or height the bracket may be iixed in exactly the correct position with ease. and despatch and without guesswork or tests.

Preferably each gage-bolster 3 bears an inscription, as shown in Fig. 1, which indicates with what size tube it is to be used and the capacity of the inspirator of which it forms a part.

The leg b2 besides cooperating with gagebolster b3 to position the fulcrum-bracket vertically, also cooperates with post c rigidly to hold the bracket against rotary as Well as Vertical displacement, whereas heretofore the sole support for the bracket has been the post c.

That I claim, and desire to secure by Let- 'ters Patent, is-

I. In an injector the combination with the overiiow-valve, the steam-controlling valve, the control-lever, the operating-lever for the overflow-valve, a connection between the control-lever and the steam-controlling Valve, and a connection between the control-lever and said operating lever, or' an adjustable fulcrumbracket for the operating-lever of the overiiow-valve, and a removable, interchangeable gage-bolster for supporting and positioning said bracket relatively to the injector-casing.

2. In an injector the combination with the overfiow-valve, the steam-controlling' valve, the control-lever, the operating-lever for the overow-valve, a connection between the control-lever and the steam-controllingvalve, and a connection betweenv the control-lever and said operating-lever, of an adjustable fulcrumbracket for the operating-lever of the overiiow-valve, a removable, interchangeable gagebolster, interposed between the bracket and the injector-casing for supporting and positioning the bracket, and means for rigidly fastening' the bolster to the casing and the bracket to the bolster.

3. In an injector the combination with the overflow-valve, the steam-controlling' valve, the control-lever, the operating-lever for the overiow-valve, a connection between the control-lever and the steam-controlling* valve, and a connection between the control-lever and said operating-lever, of an adjustable fulcrumbracket for the operating-lever of the overiiow-valve, and a removable, interchangeable gage-bolster for supporting and positioning said bracket relatively to the injector-casing, said gage-bolster bearing' an inscription to indicate the capacity of the instrument of which it forms a part.

4. In an inspirator or the like, the combination with the casing, the fixed post on said casing, and the fulcrum-bracket for the operating-lever of the overflow-valve adjustably mounted on said post and made with a leg, of a removable and interchangeable gage-bolster IOO IOS

interposed between the leg and casing for supporting and positioning said bracket, substantially as described.

5. In an inspirator or the like, the combination with the casing', the lixed post on said casing, and the fulcrum-braeket for the operating-lever of the overflow-Valve adjustably mounted on said post and made with a leg, of a removable and interchangeable gage-bolster interposed between the leg and casing for supporting; and positioning said bracket, and means to fasten the leg to the gage-bolster and the gage-bolster to the casing, substantially as described.

6. In an inspirator o1' the like, the cornbi nation with the casingA provided with a post c of the bracket B mounted on said post; the gage-bolster 3 and clamp substantially as described.

Signed by me at Boston, Massachusetts, this 24th day of May, 1904.

` WILLIAM R. PARK. Witnesses:

JOSEPH T. BRENNAN,

MARY M. DANIHER. 

